Flushing valve for cisterns



Nov. 19, 1929. N. A. MORRO FLUSHING VALVE FOR CISTERNS Filed March 9, 1928 Patented Nov. 19, 1929 UNITED STATES PATENT OFFICE FLUSHING VALVE FOR CISTERNS Application filed March 9, 1928, Serial No. 260,430, and in New Zealand March 15, 1827.

This invention relates to flushing cistern valves of the type wherein the valve is hinged at one side to the seating and is raised by the upward pull of the chain or the like, said valve being kept raised until a descending float acts to release, or to force the valve down again on to its seating.

The object of the invention is to provide improvements in the means for operating the above mentioned type of valve whereby simplicity and efliciency are assured and cost of production considerably reduced.

According to the invention the valve has on its top a. catch located below an arm pivoted over the valve hinge, the end of the arm extending over the valve being given a pawl formation to engage the catch on the valve when the latter is raised so as to maintain it in its raised position until such time as a tail piece on the arm is struck by a descending float to disengage the pawl formation from the catch and allow the valve to descend on to its seating.

According to another form of the invention the valve is hinged to one side of its seating, and in one form has a counter-weight or pawl pivoted to the valve, and adapted to engage the housing of the valve hinge. Underneath the counter-weight or pawl is a strip of metal or tripping lever, adapted to be operated by the float of the ball cock.

In the accompanying drawing in conjunction with which the invention will be more particularly described:

Figure 1 is a sectional elevation of a cistern fitted with one form of valve operating means and Figure 2 is an enlarged view in perspective of the valve and parts connected therewith,

Figure 8 is a perspective view of the other form of the invention.

In the drawing 1 is the cistern which is provided with the usual water inlet cock 2 controlled by the float 4 on the lever 3, and

4 also having a discharge outlet through a fitting 5 adapted for connect-ion to a down pipe (not shown).

A valve 6 which normally seats on the top of the fitting 5, is hinged at 5 between brackets 7 extending from the fitting 5, and is connected from a point opposite the hinge 5*, by a chain 8 or the like with the inner end of a lever 9 fulcrumed on the cistern 1 and adapted to be operated by a pull chain 10 in the usual manner.

In one form of the invention on the valve 6 in line with the hinge 5 and point of attachment of the chain or the like 8, is a catch 12 with a slightly undercut face 12*.

An arm 13 pivoted at 13 between the brackets 7 and over the hinge 5, extends over the valve 6 in line with the catch 12 said arm 13 being formed with a pawl formation 14 and being weighted to normallyrest on the valve 6 behind or over said catch 12, a tail piece 15 extending from the arm 13 being located in the downward path of the ball float 4 on the lever 3, as the latter descends in the cistern 1.

When the chain 10 is pulled downwards in the usual way to cause a flush, the valve 6 is swung upwards on its hinge 5 to open the outlet through the fitting 5 and permit the water in the cistern 1 to pass to the down pipe connected with said fitting, the valve 6 75 as it is swung upwards moving the arm 13 upwards also until the catch 12 passes inside of the pawl formation 14 which engages the slightly undercut face 12 of the catch 12 and retains the valve 6 in its raised position until such time as the float 4 in descending with the water level in the cistern strikes the tail piece 15 whereupon the pawl formation 14 is disengaged from the catch 12 and allows the valve 6 to again close on its seat 85 mg.

Following this the cistern 1 recommences to fill again, and upon the float rising with the water in the cistern, the arm 13 is allowed to come to rest again in readiness for the pawl formation 14: to engage upon the next flush taking place.

In the other form of the invention, on the valve 6 in line with the hinge 5 and point of attachment of the chain or the like 8, 95 is pivoted a counterweight or pawl 6 adapted to engage the housing of the hinge 5 A strip of metal or tripping lever 11 underneath the counterweight of pawl 6 is pivoted to the housing of the hinge 5 When the valve 6 is swung upwards in the latter form of the invention the counterweight or pawl 6 is pushed up until, it engages the housing of the hinge 5, thereby re- 5 taining the valve 6 in its raised position until such time as the float 4; in descending with the fall of the, level of the water in the cistern strikes the tripping lever tail piece 11, whereby the pawl 6 is disengaged from the housing of the hinge and allows the valve 6 to close on its seating.

WVhat I do claim and desire to obtain by Letters Patent of the United States of America is 15 1. A flushing valve for cisterns, hinged to one side of its seating, and having on its top a catch located below an arm pivoted over the valve hinge, a pawl formation on said arm for engaging the catch on the valve when the 2g latter is raised and a tail piece on said arm adapted to be struck by a descending float to disengage the pawl formation from the catch and allow the valve to close. 7

2. A flushing valve for cisterns hinged to 5 one side of its seating, and having on its top a catch located below an arm pivoted over the valve hinge, a pawl formation on said arm for engaging the catch on the valve when the latter is raised, the said arm being so weighted to normally rest on the valve, and a tail piece on said arm adapted to be struck by a descending float to disengage the pawl format-ion from the catch-and allow the valve to close.

3. A flushing valve for cisterns hinged to one side of its seating, a pawl and catch formation having one of its members on said valve, the members of the pawl and catch formation engaging with each other and maintain- 40 ing the valve in open position when the latter is raised, said pawl and catch formation being provided witha tail piece pivoted over the valve hinge and located in the path of a descending float to be contacted thereby to cause disengagement of the pawl and catch members and permit the valve to close.

In testimony whereof I have signed my name to this specification at Auckland, N. Z., this 2nd day of February, 1928.

NORMAN ANDREW MORRO. 

